wet, damp, dank, moist, humid mean covered or more or less soaked with liquid. wet usually implies saturation but may suggest a covering of a surface with water or something (such as paint) not yet dry.
//
slipped on the wet pavement damp implies a slight or moderate absorption and often connotes an unpleasant degree of moisture.
//
clothes will mildew if stored in a damp place dank implies a more distinctly disagreeable or unwholesome dampness.
//
a prisoner in a cold, dank cell moist applies to what is slightly damp or not felt as dry.
//
treat the injury with moist heat humid applies to the presence of much water vapor in the air.
//
a hot, humid climate
1573, in the meaning defined above
Middle English danke
dank
adjectivedank
adjective